As a FotoWare Customer Support Engineer, one of the issues I see on a somewhat regular basis, is that users have installed the most recent version of FotoStation, without having a valid license for that version. Simply put, if so, they will not be able to run FotoStation. On Windows, you simply uninstall the new version, install the version for which you have a license, and, as they say, Bob’s your uncle. On a Mac, however, you need to also remove the .bom and .plist files before you can install the version. Here’s how: